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Population is normally distributed with a mean of 58 and a standard deviation of 8.
(a) What is the mean of the sampling distribution (μM) for this population?
μM =
(b) If a sample of 16 participants is selected from this population, what is the standard error of the mean (σM)?
σM =
(c) Sketch the shape of this distribution with M ± 3 SEM.
Interpret the correlation between each set of variables.
The manager of a supermarket would like the variance of the waiting time soft the customers not to exceed 3minutes squared.
A male student and a female student from the college are randomly selected for a survey. What is the probability that both are smokers?
An observational rating scale is being developed to rate the classroom performance of first-year teachers, and experienced classroom teachers are asked to examine the items on the rating scale to see if they are relevant to effective performance.
If you randomly select and purchase a Starbird 300, what is the probability that your car will get less than 27 mpg
If the researcher had examined 200 flies and counted exactly twice as many in each category - 118, 40, 22, 20 - what conclusion would he have reached
You assess that if there is actually oil, the geologist will predict there is oil with probability 0.85. You also assess that if there is no oil.
Assume that the distribution of rs is approximately normal. Calculate the value of the test statistic and the p-value.
What is the present value of a series of payments of $2500 every six years in perpetuity with the first payment made immediately, if the annual rate is 8.5% per
Being extremely conservative the company will be placing the funds it needs for the purchase into a GIC with a rate of 4% compounded Monthly.
two points along a straight stick of length 39 cm are randomly selected. the stick is then broken at those two points.
A sustained long-term change in the level of the variable that is being forecasted per unit of time is: (A trend, A time series, Seasonality or A change due to business cycles)
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